Drier.



Patnted Mar. 6, 1917.

I 2 SHEETSSHEET I.

258% @k R a C. A. WENDELL.

'DRIER.

APPLICATION FILED JUNE 9| 1915.

AttOTV'ZQQS.

v To all whom it may concern:

CARL A. WENDELL, or JoLri rr; rumors.

DRIER.

Specification of Letters Patent.

Patented Mar. 6, 1917..

Application filed June 9, 1916. Serial No. 102,671.

Be it known that I, CARL A. WENDELL,

a citizen of the United States, residing atv Joliet, in the county of Will and State of Illinois, have invented a certain new and useful Improvement in Driers, of which the following 1s a specification.

My invention relates to improvements in centrifugal drying machines adapted for the purpose of extracting moisture frommaterial andhas forone object to provide a centrifugal drying machine wherein the feed is gradually'fed into the machineand gradually discharged therefrom, without interfering with the balance of the machine and without any sudden strains or ,Shock or jars or jolts, and without interfering with-the smooth running qualities of the apparatus. Another object is to provide a device wherein the time during whichthematerial to be dried remains in'the machine may be closely and accurately controlled by the operator without interfering with the feed or discharge when it takes place, without making the feed or discharge irregular or unsteady and Without throwing the machine out of balance and without stopping the machine. Other objects will appear from time to time in my specifica tion.

My inventionfis illustrated more or less diagrammatically in the accompanying drawings,-wherein Y v Figure 1 is a vertical section and Fig 2. a section along the line 22 of Fig.1; Fig. 3 a detail section along the line 33 ofFig.1.

Like parts are indicated bylike characters in all of the figures.

i A, .A is a supporting base. Projecting upwardly from it is a housing and support This hous'ingand support carries a cover or closure A and a bracket, A,

together with a bracket A. The shaft A :is rotatably' mounted in the bearings A A on-the brackets 133A, and is" ada ted to be drivenfrom any suitable source 0 power applied through the pulley A The shaft A carries rigidly mounted. thereon, miter gears A A in a housing A.

The vertical shaft B is rotatably mounted in a bearing'B supported on the cover A at one end, and at the other end it is rotatably mounted in a bearing 13 supported by a bracket 13*. B is a miter gear rigidly .mountedoon the shaft B, and in mesh with the miter gear-A ,so 'that it is positively driven from the shaft A B isa sleeve rotatably mounted on the shaft B, held against longitudinal movement therealong by the-shoulder B This sleeve carries a miter gear ,B in mesh with the miter gear A The relative sizes of the difierent miter gears areflsuch that while both the shaft and the sleeveare driven from vthe horizontal, driving, shaft, they are driven at different angular velocities. The. sleeve B is supported on, the shaft B by means of the anti-friction bearing sleeves B B. B? is a spider carried by the sleeve B adjacent its lovver'end. This spider takes the form ical disk which forms the movable or rotated top of the separating ordrying chamber.

'of'a' substantially continuous, generally con C is a conical screen made up of a series of separate sections as indicated-supported by and downwardly depending from the spider B The inclination of this-screen being much sharper than the inclination of the spider. This screen is support d in a frame C which framecarries a flangeflC extending upwardly toward the under, sideof the periphery of the spider B. so as to form a series of discharge chutes or spouts 0" ,through which the .11101St111'6, which first passes through the screen, may be dis charged. These spouts are divided up, one from another, by aseries of walls (3*, forming a. part ofthe frame C These spouts on the inner wall of the. housing A This gutter dischargesfinally through a \pipe C to any suitable water discharge point not herespecifically illustrated-..-.It will be noted discharge into a circular gutter C mounted also rotate in unison with the sleeve and has a bearing member D interposed between the hub and the shaft. D D are a series of normally horizontal trap doors, which together with a conical floor D form a continuous floor for the drying chamber, which floor extends clear out to the screen. Each of these trap doors D is separately, pivoted to the floor as indicated and makes a firm joint with the screen. They are each of them provided with a weighted arm D projecting downwardly and prov'ided'at its end'with a cam engaging roller D". The proportion and arrangement of trap doors and arm is such that when the device is in operation, the Weight of the arm will more than counterbalance the weight of the screen and any load carried by it. The weight ofthe trap door andany load carried by it will hold the trap door in a closed position so that nothing maypass through between the trap door and the screen.

E is a supply hopper fed through an opening E in the cover A? from a chute E which -is adapted to be connected or disconnected with a suitable source of supply by any control means not here indicated. This hopper discharges down through the central portion of the spider B onto a feed plate E; This feed plate is keyed to the shaft B and is I made up of-two 'separate feed nozzles E E,

I the screen. E is a conical cover for the discharging tangentially and having inclined discharge mouths E directed toward nozzle'to assist .in directing the material toward the screen. E is an apron attached to the hopper E and extending down-over the" spider B to protect the parts and guide and deflect anyv material discharged from the machine down toward the Water chute.

F is a hub keyed to the shaft B. It carries a spider E which spider supports a cam ring F. This .cam ring is in the path of the roller 1). The hub is free to slide along but cannot rotate with respect to the shaft.

' It is supported on a roller bearing F which roller bearing rests. on a sleeve F held against rotation by the pin F and free to slide along the shaft. F is a nut free to rotate with respect to the shaft in screwthreaded engagement with the sleeve 1" but held against longitudinal movement by the collar F. This nut is provided on the out side with a worm gear F in mesh with a worm F which worm is manipulated by means of a hand wheel F through a shaft ,F so as to raise and lower the hub and I raise and lower the cam with respect to the shaft.

It will be evident that while I have shown in my drawings an operative device still many changes might be made both in size, shape and arrangement of parts without departing materially from the spirit of my invention. I wish therefore that my drawings be regarded'as in a' sense diagrammatic.

The use and operation of my invention are as follows i With the parts in the position shown, the power is applied'and the centrifugal machine brought up to speed. The shaft travels at one speed, the sleeve at another so that the drying chamber with its screen outer Wall rotates more rapidly than the feed spout and the cam, and feed spout and cam rotating at the same speed.

Under ordinary circumstances my apparatus is so timed that with the parts operating in their normal, natural waythe material always stays in the machine long enough to be properly dried. It happens, however, that sometimes material must be dried which does not respond with rapidity to the drying treatment. For in stance, if I wish to draw off the liquor from finely crystallized sugar or if I am expelling oil from ground or pulverized oil containing vegetable products; the normal time given is not sufficient to expel the liquid and for this reason I provide means for interrupting at the will of the operator, the operation of the material discharge so that the material may be kept in the machine a greater length of time.

My arrangement, wherein without st'op-' ping the machine I merely drop down the trap door opening cam or throw out of operation the means for opening the normally closed discharge way, can be operated at any with the material being dried.- I-Ie will then stop the feed of the material to the drier until the material therein has all been dried. He will then recommence thefeed of material to the drier and discharge of material from the drier until. the drier is filled with fresh material and all of the dried material has beendischarged. He will then again out I off the supply both to the'drier and from the'drier. This process can be continued indefinitely without changing fin any way the operation of the drier and without necessitating any stopping or'f starting of the machine. Iclaim: I v

' v 1. In afcentrifugal drier, the combination of a frame, a pair of horizontal rotatable differentially geared members, one ofsaid members being in ,the form of' a delivery spout, the other ofsaid members'acting as a separating member whereby moisture s pro'-.

jected from the material by centrifugal action, a screen carried by said lastnamed member, said screen being mounted at an angle to the vertical, anda trap mounted in said last named member, means for opening said trap whereby material forced against said screenbythe'centrifugal force through said trap,'and means independent tation of is by the same force projected outwardly of the rotation of the spout and receptacle for interrupting the operation of such trap opening means;

2. In a centrifugaldrying machine the combination of a frame, a feed spout, a material receptacle containing-a screen'through which the water is expelled by centrifugal.

force and a normally closed discharge way, means for rotating the spout and the receptacle differentially, and'means for intermittently opening the discharge way responsive to the relative rotation of the spout and receptacle,'and means independent of the roopening means.

3. In a centrifugal drying; combination of a frame, a

machine the terial receptacle containing a screen through which the water is expelled by centrifugal force and a normally closed discharge way, means for continuously rotating the spout and the receptacledifferentially, means for intermittently opening the discharge way responsive tothe relative rotation of spout and receptacle, and means independent of the rotation of the spout and receptacle for interrupting the operation of the discharge way opening means.

4. In a centrifugal drying machine the combination of a frame, a feedspout, a ma terial receptacle containing a screen inclined at an angle-to the axis of rotation and through which the water is expelled by cena normally closed dis-- for rotating the spoutv and the receptacle differentially, means for trifugal force and charge way, means intermittently, opening the discharge way responsive to the relative rotatlon of spout and receptacle, and means independent'of the rotation of the spent and receptacle for the spout and receptacle for interrupting the operation of the discharge way feed spout,"a ma which interrupting the operation of the discharge Way opening means'.

5. ,In a centrifugal drying machine the combination of a frame, a feed spout, a material receptaclecontaining a screen inclined at an angle tothe axis of rotation and through which the water is expelled by centrifugal force and a normally closed dis charge way, means for continuously rotating the spout and the receptacle differentially, means for intermittently opening the discharge way responsive to the relative rotation of spout and receptacle, and means in-v dependent of the rotation ofthe' spoutand receptacle for interrupting the operation of I the discharge Way opening means.

6. In a centrlfugal drying machine the combination of a frame, a feed spout, a ma terial receptacle comprising a series of seceration of the discharge way opening means.

7 a centrifugal drying machine the combination of a frame, a feed spout, a material receptacle comprising a series of section-s each containing a screen through which thewater is expelled by centrifugal force and a normally closed discharge way, means for continuously rotating the spout and the receptacle diflerentially, means for intermittently opening the discharge Way responsive ole, and means independent of the rotation of the spout and receptacle for interrupting the operation of the discharge way opening means. 1

8. In a centrifugal drying machine the combination of a frame, a feed spout, a material receptacle comprising a series of sections each containing a screen nclined at an angle to the axis of rotation and through which the water is expelled by centrifugal force and a normally closed discharge way,

means for rotatin the 5 out and the rece to the relative rotation of spout andreceptatacle differentially, means for intermittently opening the discharge way responsive to the relative rotation of spent and receptacle, and

means independent'of the rotation of the spout and receptaclefor interrupting the op eration of the discharge way opening means. 9. In a centrifugal drying machine the combination of a frame, a feed. spout, a material receptacle comprising a series of sections each containing a screen inclined at an angle the water is expelled by centrifugal force and a normally closed discharge way,

to the axis of rotation and through intermittently opening the discharge Waymeans for continuously rotating the spout and the receptacle differentially, meansfor responsive to the relative rotation of spout and receptacle, and means independent of the rotation of the spout and receptacle for interrupting the operation vof thedi'scharge way opening means.

10. In a centrifugal drying machine the combination of a feed v.spout and a ring shaped material receptaclelto. which the spout discharges from Within, means for'rotating them continuously differentially in the same. direction, means for discharging successive dried sections of the material from the ring receptacl'ein advance of the spoutresponsive to the relative rotation of spout and receptacle, and means independent of the rotation of the spout and receptacle for interrupting the operationpf the dried material discharge.

11. A centrifugal drier comprising arotating drying chamber, means for feeding material to it, a conical perforate wall forming .the outer periphery of the drying chamber, a series of pivoted trap doors forming a portion of the bottom floor of the drying chamber, these doors normally closed, means.

rotating in unison with the. feed supply means for opening such doors intermittently to permit discharge of dried' material and "means controlled by the operator. and inde pendent of the operation of the feed mechanism and the rotati'onof the drying chamber for interrupting the operation of such trap door opening mechanisms. v '12. A centrifugal drier comprising a drying chamber and means for rotating it, a se- Gopies of this patent be attained for of May 1916.

ries of trap doors in the bottom of the chamthe parts for arresting such operation.

13. A centrifugal drier comprising a drying chamber and means for rotating it, a

series of trap doors in the bottom of, the chamber for the discharge of the dried material, a feed spout discharging into the" chamber and means for rotating it at a different velocity than the chamber, and means operated and rotated in unison with the feed spout 'for successively opening intermittently the trap doors and means controlled by the operator and independent of the rotation of the parts for arresting such operation, said trap door opening means comprising a cam, arms projecting from said trapdoors in the path of said cam and means for driving the cam'in unison with the spout for bringing said cam successively into en 'gagement with said arms to open sald trap doors and means responsive to the operator for displacing said cam to bring it out of operative engagement with such arms. In testimonywhereof, I afiix my signature in the presence of two wltnesses this 9th day CARL A. WENDELL.

. -Witnesses:

THOMAS J. SAMPSON, WILB R C. 'FRY, Jr.

five cents each, by addressing .the Commissionerwf Patents, I Washington, D. G. 4 

